Pipe cutting device



June 4, 1935. R. J. WILLIAMSON 2,003,619

PIPE CUTTING DEVICE Filed May 10, 1933 AT7ORNEY Patented June 4, 1935UNITED STATES PATENT OFFICE] PIPE CUTTING DEVICE Ralph J. Williamson,Milton, Mass, assignor to Trimont Manufacturing (30., Inc., Roxbury,Mass, a corporation of Massachusetts Application May 10, 1933, SerialNo. 670,268

1 Claim. (01. 2967) This invention relates to pipe cutting devicesacross or in intersecting relation with the semiand is more particularlydirected to devices of Cylindrical p s in the WO b ocks termithischaracter for cutting metal pipes. a short of t pp w the fi ct In recentyears there h s, been a growing debeing that while the saw kerfs form arela- 5 mand for soft metal pipe such for instance as tively thinportion f a block s pa at d 5 brass or copper pipes and since thesepipes are therefrom for a part of its termination, such furnished invarious lengths it becomes desirp will be substantially rigid With theblock in able at times to cut the pipe in accordance Which it iSformedwith the circumstances of installation. On the In Order that theSaw ke fS 01 Slots 1 and 8 10 other hand the walls of a soft metal pipeare m be operaitively D t Oned to form a sub- 10 usually thin andreadily distorted during th stantially continuous slot through the twoblocks cutting operation, a condition which renders there arepesitienihg p H which a to align th pipe n it bl for use ith t first thetwo blocks with the saw kerfs of each in straightening the wallsthereof. To effectively alignmentt a length of relatively soft metalpipe th In connection with the two metal blocks just 15 entirecircumferential area of the pipe should described ilhele is a holdingand Clamping be clamped or supported in such manner th t vice, one endportion [2 of Which forms a foot the cutting operation will not causedistortion aving an overhanging p i3 t engage a d ho d of the ll of th ior form d i bl one of the blocks and a base portion 14 connects burrsaround the edge of the cut section. the i001; With the pp s d 0 t ehOld- 0 One of the objects of the present invention ing and ClampingdeViCe- At Such ppo e e d is to provide a pipe cutting device of Simplethe holding and clamping device is provided an construction which willbe effective in so holdp y projecting po i5 av ng a threading the pipeduring the cutting operation that ed member iii in W ch iS e d d tclampindentations or deflections in the walls of the s SCIeW ii,Suitable handles i3 being p vided 25 pipe will be prevented. for turningthe screw to and from its clamping The invention and novel featuresthereof will position. I best be made clear from the following descrip-The c w I7 is provided W th a d k po tion tion and accompanying drawingof one good l9 adapted to bear on one of the blocks, as form thereof,shown, with the result that when the two blocks 30 In the drawing: areplaced in the clamping and holding device,

Fig. 1 is a perspective view showing the pipe as indicated in Fig. 1,the clamping screw ll cutting device and the relation of parts durmay bemanipula d to eXeIt pressure p ing the pipe cutting operation; theblocks in a direction parallel to the plane Fig. 2 is a side elevationlooking from the left of the saw kerfs or slots 1 and 8 to clamp the 35of Fig, 1; a d pipe 5 securely within the semi-cylindrical open- Fig. 3is a section on the line 33 of Fig. ings 4 of the two blocks. The effectof this is The two metal blocks I and 2 are of similar that nodisturbing pressure is exerted upon the construction with the line ofseparation at 3 side members of the saw kerfs or slots which between thetwo, and each block is provided might interfere with the propermanipulation of 40 with a semi-cylindrical opening extending longis acutting tool or saw 20. tudinally of the block, as indicated at 4, theThe holding and clamping device has the foot result being that when apipe 5 is engaged with portion 52 thereof at one side of the saw kerfs,the semi-cylindrical openings of the two blocks as indicated in Fig. 1and extending from this 4.5 and. the blocks are themselves forcedtowards point longitudinally of the holding and clampeach other asubstantial length of the pipe 5, ing device are the ribs 2| which actto strengthas indicated at 5, will be clamped between the en the holdingand clamping device, two blocks, so that the pipe 5 will receive an Fromthe construction described it will be apeXtended s pport about itsexterior surface. parent that the present invention provides a Eachmetal block and 2 is provided with a simple and compact pipe cuttingdevice which 50 saw keri or slot '5, 8 near one end and each of may bereadily transported from place to place the saw keris or slots extendsin intersecting and that when a pipe is placed between the two relationwith the semi-cylindrical openings 4 blocks, as indicated, and thepressure screw l1 and terminates at a point 9. In other words, exertsits pressure parallel with the plane of the the saw kerfs or slots 1and. 8 while extending saw kerfs the entire cylindrical surface of the55 pipe will be clamped in the semi-cylindrical openings 5 of the twoblocks thereby imparting a. sustaining support for the walls of the pipeduring the cutting operation and insomuch as the pressure of the screwI! is in a direction parallel of the plane of the saw kerfs 1 and 8 nodistortion of the walls of the saw kerfs or slots results so that acutting implement such as the saw 20 may not be disturbed during itscutting operation.

What is claimed is:

In a pipe cutting device, the combination of two relatively movablemetal blocks each having a complemental cylindrical opening of a radiusfor closely engaging the exterior of a pipe for a substantial lengththereof, a block supporting base having an upwardly extending blockholding member provided with an overhanging lip which engages the top ofand holds one of the blocks in operative position on the base, apressure device acting in opposition to the upwardly extending lippedmember, and each of the metal blocks having a saw kerf or slot extendingin a plane at one side of the upwardly extending lipped member and thepressure device.

RALPH J. WILLIAMSON.

